
ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048
Page 74
6. COMMUNICATION
INTERFACES
Coastal Environmental Systems
ZENO
®
-3200 User Manual
Many communication interface options are available with the ZENO
®
-3200. Deciding the type of
communication interface you need depends upon where and how you intend to use the ZENO
®
-3200.
The following table summarizes the various supported communication interfaces, their uses and where
you can use them.
Type of
Communication
Usage Where
Connection
Reliability
Direction
Direct Terminal
Access
Full access.
Close proximity to computer. (Up to 50
feet with RS232.)
Most reliable. Bi-directional
Telephone Modem
Full remote
access.
Telephone landlines are available. Usually reliable. Bi-directional
Cellular Modem
Full remote
access.
No telephone landlines available, but
inside a cellular network service area.
Dependent upon
cellular network
activity and RF
interference.
Bi-directional
One-way Radio
Real-time
data
collection
only.
Unidirectional
Two-way Radio
Full remote
access.
No telephone landlines available,
outside of cellular network service
area. Must be within line of site of
receiver. 5 to 10 mile range with omni-
directional antenna, 10 to 30 mile range
with directional antenna (yagi-
antenna).
79
Dependent upon
RF interference
and line-of-sight
Bi-directional
Satellite
Communication
Real-time
data
collection
only.
No telephone landlines available,
outside of cellular network service
area, distance to receiver is beyond 12
miles. Satellite provider account may
be required.
Dependent upon
RF interference,
line-of-sight with
satellite, condition
of satellite.
Unidirectional
Once you know the type of communication you intend to use (which could be combination of two or
three types), you can configure the communication settings using the Communications Menu and its
submenus.
79
Placement and alignment of the antenna is critical. The quality of a signal between a transmitter and receiver is
highly dependent upon line of sight, which encompasses antenna location, height and direction as well as
obstructions. Any obstruction between a transmitter and receiver can severely attenuate a radio signal, effectively
reducing the range.
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